cURL Command Builder

Build cURL commands visually with a simple form. Select HTTP method, add URL, headers, body, and flags. Copy the generated command to your clipboard. Free, instant, 100% private.

About cURL Command Builder

Build cURL commands visually without memorizing flags and syntax. Select the HTTP method, enter a URL, add headers, include a request body, and toggle common flags. The cURL command updates in real-time and you can copy it with one click.

Visual Builder

No need to memorize cURL syntax. Use dropdowns, fields, and checkboxes to construct your command. Perfect for developers learning cURL or needing to build commands quickly.

All HTTP Methods

Supports GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS. Each method generates the correct cURL syntax automatically with proper escaping.

Custom Headers

Add as many headers as needed with a dynamic key-value interface. Headers are properly quoted and formatted for cURL syntax.

Copy & Paste

Copy the generated command to clipboard with one click. The command is properly formatted with backslash line continuations for readability.

📋 Common Use Cases

Development Workflow

Speed up common dev tasks — encoding, formatting, validation — without writing throwaway scripts.

Debugging & Testing

Isolate and verify code, data, or encoding issues during development and debugging.

Learning & Reference

Experiment with encoding, hashing, and transformation concepts interactively.

Production Optimization

Minify, validate, and optimize code and assets before deployment.

🪜 How to Use This Tool

  1. Enter your input
    Paste code, JSON, encoded strings, or other input. File uploads also supported where relevant.
  2. Configure tool options
    Set parameters like indentation, encoding type, hash algorithm, or validation rules.
  3. Process and view results
    Click to encode, decode, format, minify, or validate. Results appear with appropriate highlighting.
  4. Copy and use
    Copy output to clipboard for immediate use in your project, config, or debugging session.

📚 Related Guides

Frequently Asked Questions

Are these dev tools free?▼
Yes. All dev tools are completely free. No signup, no account.
Is my data sent to a server?▼
No. Base64 encoding, URL encoding, JWT decoding, hash generation, and regex testing all happen in your browser. Your tokens and secrets stay on your device.
Can I decode JWTs safely?▼
Yes. JWT decoding happens entirely in your browser. The token never leaves your device. Only the header and payload are decoded — signatures are not verified server-side.